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<h1 class="title">imagemodel.cpp 示例文件</h1>
<span class="subtitle">itemviews/pixelator/imagemodel.cpp</span>
<!-- $$$itemviews/pixelator/imagemodel.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
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  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
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  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
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  <span class="preprocessor">#include &quot;imagemodel.h&quot;</span>

  ImageModel<span class="operator">::</span>ImageModel(<span class="type"><a href="../qtcore/qobject.html">QObject</a></span> <span class="operator">*</span>parent)
      : <span class="type"><a href="../qtcore/qabstracttablemodel.html">QAbstractTableModel</a></span>(parent)
  {
  }

  <span class="type">void</span> ImageModel<span class="operator">::</span>setImage(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qimage.html">QImage</a></span> <span class="operator">&amp;</span>image)
  {
      beginResetModel();
      modelImage <span class="operator">=</span> image;
      endResetModel();
  }

  <span class="type">int</span> ImageModel<span class="operator">::</span>rowCount(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span> <span class="comment">/* parent */</span>) <span class="keyword">const</span>
  {
      <span class="keyword">return</span> modelImage<span class="operator">.</span>height();
  }

  <span class="type">int</span> ImageModel<span class="operator">::</span>columnCount(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span> <span class="comment">/* parent */</span>) <span class="keyword">const</span>
  {
      <span class="keyword">return</span> modelImage<span class="operator">.</span>width();
  }

  <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> ImageModel<span class="operator">::</span>data(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="type">int</span> role) <span class="keyword">const</span>
  {
      <span class="keyword">if</span> (<span class="operator">!</span>index<span class="operator">.</span>isValid() <span class="operator">|</span><span class="operator">|</span> role <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DisplayRole)
          <span class="keyword">return</span> <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span>();
      <span class="keyword">return</span> <a href="../qtgui/qcolor.html#qGray-1">qGray</a>(modelImage<span class="operator">.</span>pixel(index<span class="operator">.</span>column()<span class="operator">,</span> index<span class="operator">.</span>row()));
  }

  <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> ImageModel<span class="operator">::</span>headerData(<span class="type">int</span> <span class="comment">/* section */</span><span class="operator">,</span>
                                  <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Orientation <span class="comment">/* orientation */</span><span class="operator">,</span>
                                  <span class="type">int</span> role) <span class="keyword">const</span>
  {
      <span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SizeHintRole)
          <span class="keyword">return</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">1</span><span class="operator">,</span> <span class="number">1</span>);
      <span class="keyword">return</span> <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span>();
  }

</pre>
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<!-- @@@itemviews/pixelator/imagemodel.cpp -->
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